| Full text | |
| Author(s): |
Su, Hui
[1]
;
Liu, Han-Yuan
[1]
;
Pappa, Anna-Maria
[2]
;
Hidalgo, Tania Cecilia
[3]
;
Cavassin, Priscila
[2]
;
Inal, Sahika
[3]
;
Owens, Roisin M.
[2]
;
Daniel, Susan
[1]
Total Authors: 8
|
| Affiliation: | [1] Cornell Univ, Robert F Smith Sch Chem & Biomol Engn, Ithaca, NY 14853 - USA
[2] Univ Cambridge, Dept Chem Engn & Biotechnol, Cambridge CB3 0AS - England
[3] King Abdullah Univ Sci & Technol, Biol & Environm Sci & Engn Div, Thuwal 239556900, Makkah Province - Saudi Arabia
Total Affiliations: 3
|
| Document type: | Journal article |
| Source: | ACS APPLIED MATERIALS & INTERFACES; v. 11, n. 47, p. 43799-43810, NOV 27 2019. |
| Web of Science Citations: | 1 |
| Abstract | |
Membrane biosensors that can rapidly sense pathogen interaction and disrupting agents are needed to identify and screen new drugs to combat antibiotic resistance. Bioelectronic devices have the capability to read out both ionic and electrical signals, but their compatibility with biological membranes is somewhat limited. Supported lipid bilayers (SLBs) have served as useful biomimetics for a myriad of research topics involving biological membranes. However, SLBs are traditionally made on inert, rigid, inorganic surfaces. Here, we demonstrate a versatile and facile method for generating SLBs on a conducting polymer device using a solvent-assisted lipid bilayer (SALB) technique. We use this bioelectronic device to form both mammalian and bacterial membrane mimetics to sense the membrane interactions with a bacterial toxin (alpha-hemolysin) and an antibiotic compound (polymyxin B), respectively. Our results show that we can form high quality bilayers of both types and sense these particular interactions with them, discriminating between pore formation, in the case of alpha-hemolysin, and disruption of the bilayer, in the case of polymyxin B. The SALB formation method is compatible with many membrane compositions that will not form via common vesicle fusion methods and works well in microfluidic devices. This, combined with the massive parallelization possible for the fabrication of electronic devices, can lead to miniaturized multiplexed devices for rapid data acquisition necessary to identify antibiotic targets that specifically disrupt bacterial, but not mammalian membranes, or identify bacterial toxins that strongly interact with mammalian membranes. (AU) | |
| FAPESP's process: | 18/14801-9 - Biomimetic organic electrochemical transistors for measuring bacterial membrane disruption |
| Grantee: | Priscila Cavassin |
| Support Opportunities: | Scholarships abroad - Research Internship - Master's degree |